Ahmed Rasha S, Mohammed Raghad S, Abdaljalil Rana O
Department of Physiology and Medical Physics, College of Medicine, Al-Nahrain University, P. O. Box 70010, Alkadhimiya, Baghdad, Iraq.
Department of Physics, College of Science, Al-Mustansiriyah University, Baghdad, Iraq.
Int J Anal Chem. 2018 May 28;2018:2541020. doi: 10.1155/2018/2541020. eCollection 2018.
Clay soil samples (0, 30, and 60 cm depths) were collected from two districts (Abu Al Khasib and Ad Dayr) in Basrah governorate in southern Iraq for gamma-ray spectroscopy. The activity concentrations for natural existing radionuclides in 18 soil samples were measured using high-purity germanium detector HPGe. From the obtained results of -ray spectroscopy, the U activity concentrations were found to be ranging from 2.4 to 5.6 ppm with an average of 3.5 ppm in Abu Al Khasib and ranging from 2.1 to 4.5 ppm with an average of 2.9 ppm in Ad Dayr. Th concentrations were ranging from 3.6 to 7.5 ppm with an average of 4.7 ppm in Abu Al Khasib and ranging from 3.7 to 7.9 ppm with an average of 5.0 ppm in Ad Dayr. K concentration was ranging from 0.1% to 2.0% with an average of 1.2% in Abu Al Khasib and ranging from 0.9% to 1.8% with an average of 1.3% in Ad Dayr. High U and Ra concentration levels were recorded in both study regions. The concentrations of Th are within the normal limits in both regions. High levels of K were recorded in some locations. Generally, in most locations, K activity was within normal ranges. The radium equivalent activity, the external hazard index, the internal hazard index, and the radioactivity level index were calculated to estimate the radiation hazard in Basrah. The estimated radiation hazard indices were within normal limits, except the radioactivity level index, which shows elevated values. The obtained results were compared with other countries and with the worldwide median certified values.
从伊拉克南部巴士拉省的两个地区（阿布·哈西卜和代尔）采集了黏土土壤样本（深度分别为0、30和60厘米）用于伽马射线能谱分析。使用高纯锗探测器HPGe测量了18个土壤样本中天然存在的放射性核素的活度浓度。根据伽马射线能谱分析的结果，在阿布·哈西卜地区，铀的活度浓度范围为2.4至5.6 ppm，平均为3.5 ppm；在代尔地区，铀的活度浓度范围为2.1至4.5 ppm，平均为2.9 ppm。钍的浓度在阿布·哈西卜地区为3.6至7.5 ppm，平均为4.7 ppm；在代尔地区为3.7至7.9 ppm，平均为5.0 ppm。钾的浓度在阿布·哈西卜地区为0.1%至2.0%，平均为1.2%；在代尔地区为0.9%至1.8%，平均为1.3%。两个研究区域均记录到较高的铀和镭浓度水平。两个区域的钍浓度均在正常范围内。在一些地点记录到高水平的钾。总体而言，在大多数地点，钾的活度在正常范围内。计算了镭当量活度、外照射危害指数、内照射危害指数和放射性水平指数，以评估巴士拉的辐射危害。除放射性水平指数显示值升高外，估计的辐射危害指数均在正常范围内。将所得结果与其他国家以及全球认证中位值进行了比较。
